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| 0000799233-11-000052-index.html | 2011-11-07 18:16:28 | |
| 0000799233-11-000052.txt | 2011-11-07 18:16:28 | |
 0000799233-11-000052-xbrl.zip | 108664 | 2011-11-07 18:16:28 |
| exhibit3112011q3.htm | 23622 | 2011-11-07 18:16:28 |
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| Financial_Report.xls | 443672 | 2011-11-07 18:16:28 |
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| htld-20110930.xsd | 27749 | 2011-11-07 18:16:28 |
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| htld2011q310q.htm | 725120 | 2011-11-07 18:16:28 |
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| report.css | 2721 | 2011-11-07 18:16:28 |
| Show.js | 6423 | 2011-11-07 18:16:28 |